Hmm, just trying the VNXT EMT140 programs and it seems like there's a big latency created by this, 1 or 2 seconds.

NOW... I AM new to Nebula so maybe it is simply the case that Nebula 3 Reverb just has a big latency and therefore it is only usable while mixing, not while tracking. Is this correct? Or should I be able to get a low latency performance out of this, and be able to use it as a Send effect while tracking?

ah ok. it's a shame because the reverb sounds so beautiful it would be nice to use it as a send effect while i develop a new album, but never mind, looks like it's back to the basic Waves IR-1 plates until mix time

Q.5.7 Is it suppose to be a delay when you use this plug-in?Nebula Reverb version has more or less 16K of latency, which is not so much, around 1/3 of second. Some VST/AU hosts behave strangely when latency is more than 8192. So change DSPBUFFER parameter to a small value like 2048. With this setting CPU load is x4, but the latency is exactly the x0.25.